National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Pease Air Force Base / Portsmouth (KPSM)

Lat: 43.08°NLon: 70.82°WElev: 102ft.

Mostly Cloudy

86°F

30°C

Humidity 40%
Wind Speed W 3 mph
Barometer 29.95 in (1014.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 20 Aug 12:55 pm EDT
Extended Forecast for

New Castle NH

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 81. Southeast wind around 5 mph.

    High: 81 °F

    Partly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 60. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers between 10am and 1pm. Partly sunny, with a high near 74. Northeast wind around 5 mph. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers after 2am. Increasing clouds, with a low around 60. Calm wind.

    Low: 60 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers, mainly after 11am. High near 73. Northeast wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 73 °F

    Showers

  • Saturday Night

    Saturday Night: Showers, mainly before 2am. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Sunday

    Sunday: A 40 percent chance of showers. Mostly cloudy, with a high near 78.

    High: 78 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers before midnight. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 81. Southeast wind around 5 mph.
Tonight
A 30 percent chance of showers, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 60. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers between 10am and 1pm. Partly sunny, with a high near 74. Northeast wind around 5 mph. Chance of precipitation is 30%.
Friday Night
A 30 percent chance of showers after 2am. Increasing clouds, with a low around 60. Calm wind.
Saturday
Showers, mainly after 11am. High near 73. Northeast wind 5 to 10 mph. Chance of precipitation is 80%.
Saturday Night
Showers, mainly before 2am. Low around 61. Chance of precipitation is 80%.
Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 78.
Sunday Night
A 40 percent chance of showers before midnight. Mostly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Castle NH
 43.05°N 70.75°W (Elev. 13 ft)
Last Update:
10:57 am EDT Aug 20, 2026
Forecast Valid:
1pm EDT Aug 20, 2026-6pm EDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation